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Card 6

Front

The earth would be all at sea level if _______ hadn't have formed.

Back

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Card 7

Front

The earths age can be discovered by...

Back

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Card 8

Front

A rocks radioactivity __________ over time.

Back

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Card 9

Front

Structure of the earth...

Back

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Card 10

Front

__________ created the theory of continental drift.

Back

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Card 11

Front

The continents all...

Back

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Card 12

Front

Four reasons why Wegener's theory wasn't accepted...

Back

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Card 13

Front

Wegener's theory became accepted by...

Back

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Card 14

Front

The earths crust is separated into...

Back

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Card 15

Front

Natural hazards are also known as...

Back

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